LOCAL_PATH := $(call my-dir) #不用修改

include $(CLEAR_VARS) #不用修改

LOCAL_MODULE := SetGPIO #动态库名称
LOCAL_SRC_FILES =: SetGPIO.cpp JniLib.cpp SerialPort.cpp #Cpp文件，里面就是我们写的Cpp代码
include $(BUILD_SHARED_LIBRARY) #生成.so动态库

